> Portal Navigation:
> 
> - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version.
> - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages).
> - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`).
> - Top-level index of all portals: https://dev.wix.com/docs/llms.txt
> - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt

# [Velo](https://dev.wix.com/docs/api/get-menu-content?url=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo&format=markdown.md)

## [Events & Service Plugins](https://dev.wix.com/docs/velo/events-service-plugins.md)


### [Data](https://dev.wix.com/docs/velo/events-service-plugins/data.md)


#### [Events](https://dev.wix.com/docs/velo/events-service-plugins/data/events.md)


- [onExternalDatabaseConnectionCreated()](https://dev.wix.com/docs/velo/events-service-plugins/data/events/on-external-database-connection-created.md)

- [onExternalDatabaseConnectionDeleted()](https://dev.wix.com/docs/velo/events-service-plugins/data/events/on-external-database-connection-deleted.md)

- [onExternalDatabaseConnectionUpdated()](https://dev.wix.com/docs/velo/events-service-plugins/data/events/on-external-database-connection-updated.md)

- [onDataItemCreated()](https://dev.wix.com/docs/velo/events-service-plugins/data/events/on-data-item-created.md)

- [onDataItemDeleted()](https://dev.wix.com/docs/velo/events-service-plugins/data/events/on-data-item-deleted.md)

- [onDataItemUpdated()](https://dev.wix.com/docs/velo/events-service-plugins/data/events/on-data-item-updated.md)


#### [Hooks](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks.md)


##### [wix-data-hooks](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks.md)


- [Introduction](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/introduction.md)

- [afterCount()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/after-count.md)

- [afterDistinct()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/after-distinct.md)

- [afterGet()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/after-get.md)

- [afterInsert()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/after-insert.md)

- [afterQuery()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/after-query.md)

- [afterRemove()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/after-remove.md)

- [afterUpdate()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/after-update.md)

- [beforeCount()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/before-count.md)

- [beforeDistinct()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/before-distinct.md)

- [beforeGet()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/before-get.md)

- [beforeInsert()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/before-insert.md)

- [beforeQuery()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/before-query.md)

- [beforeRemove()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/before-remove.md)

- [beforeUpdate()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/before-update.md)

- [onFailure()](https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/on-failure.md)



#### [Service Plugins](https://dev.wix.com/docs/velo/events-service-plugins/data/service-plugins.md)


##### [External Database Collection (Legacy)](https://dev.wix.com/docs/velo/events-service-plugins/data/service-plugins/external-database-collection-legacy.md)


- [Introduction](https://dev.wix.com/docs/velo/events-service-plugins/data/service-plugins/external-database-collection-legacy/introduction.md)

- [Authentication](https://dev.wix.com/docs/velo/events-service-plugins/data/service-plugins/external-database-collection-legacy/authentication.md)

- [Errors](https://dev.wix.com/docs/velo/events-service-plugins/data/service-plugins/external-database-collection-legacy/errors.md)

- [Example Data](https://dev.wix.com/docs/velo/events-service-plugins/data/service-plugins/external-database-collection-legacy/example-data.md)

- [Schema](https://dev.wix.com/docs/velo/events-service-plugins/data/service-plugins/external-database-collection-legacy/schema.md)

- [Request Context](https://dev.wix.com/docs/velo/events-service-plugins/data/service-plugins/external-database-collection-legacy/request-context.md)

- [Data](https://dev.wix.com/docs/velo/events-service-plugins/data/service-plugins/external-database-collection-legacy/data.md)

- [Provisioning](https://dev.wix.com/docs/velo/events-service-plugins/data/service-plugins/external-database-collection-legacy/provisioning.md)